Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!husc6!bbn!rochester!udel!mmdf
From: AXDRW%ALASKA.BITNET@cunyvm.cuny.edu (Don R. Withey)
Newsgroups: comp.sys.amiga
Subject: Bad blocks on hard disks
Message-ID: <4975@louie.udel.EDU>
Date: 21 Oct 88 06:35:39 GMT
Sender: usenet@udel.EDU
Lines: 29

Well, I found a bad spot on my hard disk yesterday.  When I was trying
to generate some timings for a posting.  I tried sending a 1mbyte buffer
to disk to a file 10 times, and in the process, I got a nifty requester
saying that I had a read/write error on my HD.  It messed up my machine
so I rebooted, and while the drive was revalidating, I got the requestor
again (same spot).  So I copied all of the files from the "bad" partation
to the good partition (I split my drive in half).  And then reformatted
the "bad" partition.  Well, about 20 minutes later, I come back and my
system has locked up on cylinder 813 (I have 820 on the drive).  So I
say, ah ha! there is where the bad block is...  Then I reliased that I
had no idea where on the 6 surfaces the bad area was, I just knew the
cylinder.  So I changed my mount list to stop at cylinder 812.

Now that I have a stop-gap solution to my problem.  How to I go about
fixing it the correct way???  I have a Seagate ST277N, and a A2090A, I
looked at the test sheet from Seagate, all it said was PASSED in big letters.
No error map, like they give you with their ST506 drives...

Any clues anybody???
        Don
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Don R Withey                    BITNET: AXDRW@ALASKA.BITNET
University of Alaska            BIX:    dwithey
3211 U.A.A. Drive
Anchorage, Alaska  99508
907-786-4851 (work) 907-277-9063 (home) 907-274-6378 (other home)
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Any expressed opinion is my own and in no way represent those of my employer,
the University of Alaska.